Hinge



Jan; 29, 1935.

G.l E. PICKUP HINGE Filed Deo. 30, 1951 Patented Jan. `29, 1935 uNrrED s'rliilazs PATENT OFFICE HINGE.

George E. Pickup, Newark, Ohio, assignor to The Wehrle Company, Newark, Ohio,a corporation The invention relates generally to hinges and of Ohio ApplicationDecember 30, 1931, Serial No. 583,834 11 Claims. (Cl. 126-191) more particularly to hinges adapted for supporting oven doors.

construction for oven doors whereby the door when closed is held firmly against the door frame at all ofits edges by a yielding force so as to 1 eiectuallyseal the door opening, and constructed in such a 'manner 'that the application of an opening force tothe door causes an immediate shifting of the entire4 body of the door, including the pivoted edge thereof, away from the door frame prior to any pivotalmovement of the door about its pivoted edge, whereby to avoid damage to the enameled stove front bythe pivoted edge of the door.

Another object of the invention is to provide a hinge construction for oven Idoors havinga shiftable support for the door permitting transverse shifting of the pivotal axis of the doorA toward and away from the door frame, andembodying means operable when an opening force is applied to the door handle to cause transverseshifting of the pivotal axis of the door away from the door frame prior to the pivotal movement of the door relative to its shiftable support.

Another object is to provide an improved hinge construction for oven doors providing for successivemovements of a different character for the door 'and embodying spring means operable to insure a deiinite predetermined sequence in such movements.

Another object is to provide a newv and im'- proved concealed hinge for oven doors of such a construction that when the door is in its open or horizontal position, theupper surface thereof is alned with the bottom oi the door opening and the'bottom of the oven compartment.

Another object is to provide an improved type of oven doorhinge constructed so as to prevent scratching of the door or door'iframev in the door movements; to eiectually seal the opening about all edges of the door, and when the door is in its open or horizontal position, to aline the upper surface of the door with the bottom of the oven compartment.

Another object is to'provide such a shiftable mounting for oven doors which is simple and economical in construction and rugged in use.

Another object is to simplifythe construction of counterbalanced o ven doors by ,providing a new, 'improved and simplified mounting for a tor- 5 sion spring for use with such doors.

Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawing which illustrate a preferred embodiment of the 10 invention, and in which:

Figure 1 is a fragmental vertical sectional view of a stove embodying a hinge constructed in accordance with the present invention, the oven door being shown in its open position.

Vdoor in its closed position.

Fig. 3 is a front elevational lview of the door frame shown in Fig. lwith the door in its open position. 20

Fig. 4 is an enlarged fragmental sectional view similar to Fig. 2 and taken along the line 4-4 of Fig. l3. l v

Fig. 5 is a view similar to Fig. 4 showing the oven door shifted away from the door frame and 25 ready for its pivotal opening movement;

Fig. 6I is an inside elevational view of the hinge as viewed from the left in Fig. 4.

Fig'. 7 is a sectional view of the spring mounting taken along the line 7-'1 of Fig. 1. 30

In the preferred form illustrated the invention is embodied in an oven construction having a door frame 10 defining an opening 11 adapted to be closed by a pivotally mounted door 12. The door frame is, in accordancev with common practice, u"35 enameled on itsouter surface so as to render objectionable any rubbing action between the door frame and the door. Damage to this enameled surface is av( ided by mounting the door for pivotal movement onjsupporting means which is 40 shiftable to move the pivotal axis of the door toward and away from the doory frame, and by providing for' shifting of the support away from the frame and pivoting of the door on said support successively in the opening of thev door and 45 vice versa in the closing movement of the door. Preferably the hing-e is arranged to be concealed by the door-12 when toe door is in -its closed position, and in the present instance, the hinge at each of the side edges of the door- 12 comprises 50 a shiftable supporting member 13 upon which the door 12 is pivoted on an axis 14 within the body of the door, and the member 13 being mounted on the door frame, 10 to provide for movement 0I the axis 14 toward and away from the door 55 frame. As shown in Fig. 3, the supporting members 13 are spaced inwardly a short distance from the side edges of the door 12 and extend rearwardly through openings 15 formed in the door frame adjacent to the edges of the opening 11. r111e pivotal connection between each supporting member 13 and the door 12 is provided by a plate 16 secured within the body of the door and having an ear 17 at its lower end through which a pivot pin extends into the supporting member 13 to provide the pivotal axis 14.

The shiftable mounting of the supporting members 13`is preferably pivotal in character and to this end each member 13 is shaped to extend downwardly along the inner side of the frame so that its lower end is located a substantial distance below the pivotal axis 14 of the door 12. Thus the lower end of the member 13 is pivoted to the door frame 10 by forming an inwardly projecting boss 18 in the door frame with a slot 19 in its upper half adapted to receive one side of a bifurcated lower end 20 formed on the member In the present form the supporting member 13 is of hook-like form, having a portion 138, which projects downwardly along the frame to a point below the lower edge of the door opening 11, the extreme lower end being pivoted to the ear 17 outside of the frame 10. The outer portion 13 of the supporting member is spaced from the inner portion so as to permit shifting of the pivotal axis 14 by movement of the member 13 about its pivot 18 between the two positions shown in Figs. 4 and 5, and the outward shifting movement is limited by an abutment 21 on the member 13 engaging the inner side of the frame. With the particular hook-like form of the member 13, the portion 13a extends through an opening 22 in the inner side of the door 12 so as to avoid the necessity for openings in the lower edge of the door.

Oven doors of the character shown are preferably counterbalanced` and in the present embodiment the door counterbalancing means is utilized to preventpivotal movement of the door on the supporting member 13 until the'pivoted edge of the door has been moved away from the door frame. To this end, adjustable torsion springs 22 (only one shown)mounted on the side walls 23 of the oven compartment each have one arm 22a projecting forwardly for connection with a link 24. The preferred mounting for the spring comprises a sheet metal plate 22b centrally aper- -tured to provide upstanding outwardly curved prongs l22c about which the spring 22 is coiled. At its rear edge, the plate 22c is bent upwardly to form an arcuate flange 22d centered on the coil of the spring and provided with a plurality of spaced notches 22e with which the other arm 22a of the spring may be selectively engaged to adjust the spring tension. It will be noted that the notches 22e slope so as to draw the arm 22a toward the plate, and the arm 22a is engaged with one ofthe notches so as to tend to hold the coil -of the spring in place on the prongs 22e.

Each link 24 extends upwardly along the inner side of the frame 10 land is connected to the inner end of an arm 25 ixed-to and projecting inwardly from the door 12. In the present instance the arm '25 is formed integrally with the door plate 16 and projects through the openings 22 and 15 in acts to pivot the supporting member 13 to draw the pivoted edge of the door toward the door frame. In its pivoting action upon lthe door and the supporting member, the spring 22 acts differentially to prevent relative pivoting movement of the door on the support when the door is in contact with the frame whereby to prevent objectionable rubbing of the door on the frame.

The desired dierential action of the spring 22 is obtained by causing the spring to act upon the support 13 through an effective lever arm which is at al1 times less than the effective lever arm through which it acts upon the door 12. With this arrangement, an opening force applied to ahandle 26 at the upper edge of the door first overcomes the restraining force applied to the supporting member 13, whereby to cause shifting of the member 13 and the door 12 outwardly away from the frame 10 from the position of Fig. 4 to the relation of Fig. 5.

Aon the adjacent supporting member 13 and centered on the axis 14 of the door. As the door moves in a door closing direction and reaches its substantially vertical position, the part 27 moves into contact with an. abutment 29 formed on the member 13 at the lower end of the arcuate surface 28. The spring 22 then acts through the part 27 and the abutment 29 to shift the supporting member 13 about its pivot 18 so as to draw the door 12 against the frame at all its edges.

The opening movement of the door is limited by a stop 30, formed on the inner end of the arm 25 and arranged to move into abutment with the inner surface of .the frame 10.

In Figs. 3 and 6 of the drawing, it will be noted that the arm 25 and the member 13 extend side by side through the opening in the frame, and through contact with each other and with the sides of the opening, the arm 25 and the member 13 are held against transverse shifting. This contact is maintained through the entire range of movement of the parts by forming an upward extension 31 which projects upl wardly beside the arm 25 (Fig. 1) when thel door is in its open position. The extension 31 also forms a stop in the path of the part 27.

The supporting members 13 are preferably proportioned so that the pivotal axis 14 is located below the lower edge of the opening 11 a distance equal to the distance between the inner surface of the door and the pivotal axis 14. By this construction, alinement of the upper surface of the open door with the bottom of the oven is insured. y.

From the foregoing it will be apparent that the invention provides a simpleand economically constructed shiftable hinge structure which prevents undesired contact of the door and door frame during movement of the door and which insures effectual sealing of the door opening.v

I claim as my invention:

1. In a hinged construction for oven doors the combination of a door frame with an opensaid door on said support toward its closed posi- Adoor shiftable toward and away from said door frame, spring means acting to apply yielding force tending to shift said support to move said pivotal axis toward said door frame and to pivot tion, the yielding force tending to pivot said door about its lower edge being greater than the yielding force tending to shift said support whereby to insure outward movement of said support prior to pivotal movement of the door relative to the support. A

2.A hinged construction for oven doors comprising a door frame having an opening, a door for closing said opening, a supporting member pivoted on said door frame on a lower axis disposed a substantial distance below said opening and extending upwardly from its pivot, means including a second member providing an upper pivotal axis between said supporting member and said door adjacent to the lower edge of the door, and spring means acting on both of said members diierentially to cause pivotal movement of said door about said lower axis and said upper axis successively in the opening movement of said door, both of said pivotal movements occurring against the action of said spring in the opening movement of the door.

3.v In a hinged construction, the combination of a door frame and a door adapted to abut the outer face of said framev and to overlap the edges of the door opening, a supportmember pivoted at one end to said frame at a substantial distance from one edge of the door opening and pivoted at its other end to the adjacent edge of said door, and spring means acting with a given force to shift said member and retract the pivotal axis -of the door toward the door port in a door closing direction, spring meansacting on said door and tending to pivot said door on said. support in a door closing direction, and acting when said stops are engaged to move said support in a direction which shifts the door toward said frame, and stop means acting between said frame and said support to limit movement of said support in the opposite direction.

5. In a hinged construction, the combination of a door frame defining an opening, a door for closing said opening adapted to abut the outer face of said frame and 'overlie the edges'of said opening, a hook-shaped hinge member having a comparatively4 long portion positioned on the inner side of the frame with its end pivoted to said frame a substantial distance below the lower edge of said opening, the other end portion of said hook-shaped member extending through said frame and downwardly along the outer side of said frame and being pivoted to said door a substantial distance above the pivotal axis of said member'on said frame, interengageable stops acting between said door and said member to limit` the pivotal movement of said door in a door closing direction relatively to said member, and spring means acting on said door tending to bring said stops into engagement and tending when said stops are engaged to pivot said member to move said door toward said door frame.

6. A hinged construction combining a door framedening an opening, a door for closing said opening adapted to abut the outer face of said frame and to overlap the edges of the opening, a hinge member positioned on the inner side of said frame and pivoted thereto a substantial distance below the lower edge thereof, said member extending toward said opening and havingv a portion extending forwardly through said frame, means pivoting said portion to said door, interengageable stops acting between said door and said member to limit the pivotal movement of said door on said member in a door closing direction, and resilient means acting when said stops are engaged to swing the upper end of said member inwardly of said door frame to move said door toward the frame.

'7. In an oven door hinge construction, the combination of a door frame dening an opening, a door for closing said opening arranged to overlap the edges of the opening, a supporting hinge member having one end positioned on the inner side of the door frame and pivoted thereto a substantial distance below the lower edgeof said opening, the other end ofsaid member being of hook-like form extending outwardly through said frame and downwardly for a short distance along the outer face of said frame, the inner and outer portions of said member being spaced apart to permit shifting of the member about s'aid pivot and means pivoting said door to said hook-like end of said member.

8. In a hinged construction for oven doors or the like, the combination of a door frame and a door for closing the door opening adapted to abut the Vouter face of the frame and to overlap the edges of the door opening, a supporting, member pivoted at one end on said door adjacent one edge thereof and outwardly of said door frame, and pivoted at its other end on said door frame at a substantial distance from the corresponding edge of the door opening and inwardLv of the plane of said other pivot whereby to provide for shifting movement of the pivoted edge of the door toward and away from the door frame, an

arm connected to said door and arranged in a. closing pivotal movement of said door to engage an abutment on said member, and Aspring means connected to said arm so as to apply a pivoting force to said door and saidA member inwardly of the plane of the pivot of said member on said trame.

9. In a hinged construction for oven doors, the combination of a door frame having an opening, a door for closing said opening, a supporting member pivoted on said door and shiitably mounted on said door frame to permit shifting of the pivot of said door toward and away from said door frame independently of the movement of the door relatively to said member, and a single spring connected to the door `and acting to resist outward movement of the supporting member and opening movement of the door relatively to the door. frame and to resist shifting of said member and said door relatively to each other.

10. A hinged construction combining a door frame defining an opening, a door for closing said pivoted to said door and the other endl pivoted to said frame a substantial distance from the edge of said door, spring means acting to pivot said door on said supporting member in a door closing direction, and stop means acting between said door and saidmember to limit such movement by said spring means.

11. In a hinged construction for oven doors, the combination of a door frame with an opening therein, a door adapted to close said opening and overlapping the edges thereof, a member providopening, a supporting member having one end ing a pivotal support for one edge of said door shiftable toward and away from said door frame,

an arm ilxed on said door near the pivoted edge A thereof and projecting inwardly, and a spring xed at one end and connected to said arm at the other end, said spring and said arm coacting with said supporting member in an opening movement of said door to cause the pivotal sup.- port of said door to shift away from said door relative to said spporting member.

GEORGE E. PICKUP.

' frame prior to the pivotal movement of the door 10 

